Pneumatic tire.



PATEN'IED JAN. 2l, 1908.

T. B. TIEPENBACHER. PNEUMATIC TIRE.

' APPLIOA Trou FILED 11.111.16.190?.

Wl C Vozml ffo ' tached to the riin 1 of the'wheel in the -usual To theouter circumference of the L i claim as new and desire to secure byLetters -Cll l UNITED STATES PATENT-OFFICE. i

l Tnoiiis nfHEFENBAcHER, or NEW Yo'Rir, N. Y

` Pimm'rrc Tran.

Specication of Letters Patent.-

Patented Jan. 21, 1908.

Application led K 'lh 16- 1907. Serial No. 362.619.

To all whom imag concern:

Be it known that I, THOMAS B. TIEFEN- RACHER, a citizen ofthe UnitedStates, residing in New York, in the borough of Manhattan, county andState of New York, have invented certain new and useful I m rovenientsin Pneumatic Tires, of which t e following is a specification.

This invention `relates to an improved tire forvaufemobiles and othervehicles, which is provided with an exterior flexible thread forprotectin the interior air-tube a. ainst punctures, an ing layer betweenthe air-tube and its sheath for absorbng the Vmoisture and preventingthe heating up purpose the invention consists of a pneumatic tire, whichcomprises an interior air-l tube, a sheath surrounding the air-tube, anelastic covering' layerfor said sheath, and a tread of felt on the outercircumference of said layer.

The invention consists vfurther of a pneu- ,matic tire which com risesan interior air- 'tube, a covering sheat i for the same, a layer offelt. or. other absorbent material between the air-tube and sheath, anelastic layer inclosing the sheath, a tread of felt on the outercircumference 'of' said layer, and an elastic covering for said tread.

The invention consists further of certain details of construction whichwill be fully d e- "segiyfhich fused scribed hereinafter and finallypointed out in the claims.

In, the accompanying drawing, Figure l represents a vertical transversesection of my f improved pneumatic tire, showin the exte-. 'riorfelt-tread, and Fig. 2 is a simi ar section,

with an elastic covering extending around the felt-tread.

Similar letters of reference indicate correspending parts throughout thefigures of the r t ilig'ing. l

eferring to the drawing, t represents an inflated airtube of anyapprovedconstruction, and a a covering sheath for the same. t

The sheath a surrounds the. air-tube t and is again inclosed by acovering layer b of soft rubber of suitable thickness, which isconnected 'to the sheath, the latter being atmanner.

:coveringlayer b is, applied a tread d of felt of for piano-hammers andthe capable of .resisting the which is provided wit a protect.

of the air-tube; and for/this l piercing of the covering layer andsheath by nails, stones and other sharp articles, so as to protect theair-tube against puncture and collapse, i

The felttread d is vulcanized, cemented or otherwise attached to thevouter circumference of/the layer so as to 'adhere firmly to thecircumference of the same. The tire may be used either in this form, orthe feltelastic covering e of soft rubber, thereby increasing theprotection for the air-tube t and its sheath a. The tread of felt may beeither in one 'continuous piece extendin around the circumference of thecovering ayer, or of several sections which are made to abut againsteach other at their ends. Between the air-tube t and the covering sheatha is interposed a layerf of felt or other absorbent material -which isvulcanized or cemented at its ends to the inner ends ofthe sheath a, asshown at f1, the main portion of the tubular Vlayer being loose anddisconnected so as to l expandl freely with the airtube when the latterisinated. One endfof the felt-layerf is extended sufficiently beyond theend f, which is fastened to the inner'end .of the sheath a, to form alayer f 2 that extends over the ortion of the rim between the innerends. of t e sheath a and revents thereby the contact of the 'inflateair-tube with the rim.

air-tube t and the inside of t-lie sheath by abi sorbing themoisturewhich is carried to the same with the air, and prevents theheating up of the tire and thereby the softening of the rubber from.which' the air-tube. is made. Explosions oi`,the tire through theheating of g the airtube are also prevented.

l My improved tire has the following advan- Itages: first, that the felttread prevents i skiddin owing to its increased friction with l the suace of the ground; second, that the i felttread revents uncturing of theair-tube and its s eath; t ird, that the felt-tread i renders the tirevery durable as the wear is i mainly taken up bv' the felt-tread; and,ffourth, that by the'iayer of felt interposed bet-Ween the air-tube andthe coverin f sheath, the deterioration of the air-tube an' its colglapse by overheating are prevented.

Having thus described my invention, I

' Patent-z l 1. A pneumatic tire for automobiles and -inother vehicles,consisting of an air-tube, a

tread may be again protectedby an buter,

The intermediate layerf of felt protects the.

of ,fait mterposdbetween the air-tube and the sheath, a cove layer ofelastic material and a treaoi fe t secured germanently to tile outercircumference of sai la' ern.

2.l A pneumatic tire `for automo iles and o'thci vehicles, consisting ofen interior airt'ube; a cove sheath surrounding said air- "tbeg a layero fait lnterpos'd between the -air-tube and-sheath, said layer Attachedto' the inner ends' :ifthe 'sheath a provided with-an egd'-enson fitting`between the sir'- tube and nin so as to inclose the air-tube, an outerelastic' covering layer, and a tread of felt on the Aouter clreumferenceof said layer. 1S l'. In testimony, that I claim the foregoing se lmyinvention, I have `signed my neme in presence oftwosubscribirpxwitnesses.' THOMAS B.'TI J ENBACBER.

Witnesses:

; PAUL Goicm,

'HENRY J. Sorrentina.

